Electronic Device and Method for Changing Display State

This application is a continuation of International Application No. PCT/KR2023/018383 designating the United States, filed on Nov. 15, 2023, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application Nos. 10-2023-0008361, filed on Jan. 19, 2023, and 10-2023-0012553, filed on Jan. 31, 2023, in the Korean Intellectual Property Office, the disclosures of each of which are incorporated by reference herein in their entireties.

The disclosure relates to an electronic device and a method for changing a display state.

An electronic device may include a display panel. The electronic device may include a display driver circuitry operably (or operatively) coupled to a display panel. The display driver circuitry may display, on the display panel, an image obtained from a processor of the electronic device.

The above-described information may be provided as a related art for the purpose of helping to understand the present disclosure. No assertion or determination is raised as to whether any of the above-described information may be applied as a prior art related to the present disclosure.

electronic device is provided. The electronic device may comprise a processor. The electronic device may comprise display driver circuitry operably coupled with the processor. The electronic device may comprise a display panel operably coupled with the display driver circuitry. The processor may be configured to, by providing, to the display driver circuitry, first data for a screen including a character having a first brightness level, display, on the display panel, the screen. The processor may be configured to, while the screen is displayed based on the first data, identify an event indicating to activate a function for an eye comfort. The processor may be configured to, based on the event, display, on the display panel, the screen by providing, to the display driver circuitry, second data for the screen including the character having a second brightness level higher than the first brightness level.

A method is provided. The method may comprise, based on first data for a screen including a character having a first brightness level, displaying, on the display panel, the screen. The method may comprise, while the screen is displayed based on the first data, identifying an event indicating to activate a function for an eye comfort. The method may comprise, based on the event, displaying, on the display panel, the screen based on second data for the screen including the character having a second brightness level higher than the first brightness level.

An electronic device may execute a function for an eye comfort. As a non-limiting example, a color temperature of a screen displayed on a display panel based on the execution may be lower than a color temperature of the screen displayed on the display panel without the execution (or bypassing the execution) for an eye comfort. As a non-limiting example, a color gamut of the screen displayed based on the execution may be lower than a color gamut of the screen displayed on the display panel without the execution (or bypassing the execution). As a non-limiting example, a brightness level of the screen displayed based on the execution may be higher than a brightness level of the screen displayed on the display panel without the execution (or bypassing the execution), for an eye comfort. For example, the function may be referred to as an eye comfort setting, an eye comfort shield, an eye comfort mode, or a night shift setting.

For example, the electronic device may include components for executing the function. The components may be illustrated with reference to.

is a block diagram illustrating an example configuration of an example electronic device according to various embodiments.

Referring to, an electronic devicemay include a processor (e.g., including processing circuitry)and a display.

For example, the processormay be used for at least a portion of operations illustrated and described with reference to. For example, the processormay be operably coupled with the displayand/or display driver circuitrywithin the display. For example, the processormay include at least a portion of the processorof.

For example, the displaymay include display driver circuitryand a display panel.

For example, the display driver circuitrymay be used for at least a portion of operations illustrated and described with reference to. For example, the display driver circuitrymay be operably coupled with the processor. For example, the display driver circuitrymay be operably coupled with the display panel. For example, the display driver circuitrymay include at least a portion of the display driver ICof.

For example, the display panelmay be used for at least a portion of operations illustrated and described with reference to. For example, the display panelmay be operably coupled with the display driver circuitry. For example, the display panelmay include at least a portion of the displayof.

For example, the processormay generate, obtain, render, or configure a screen to be displayed on the display panel. For example, the processormay identify a character within the screen to be displayed on the display panel, for an eye comfort. For example, the character may be an entity defined for communication. For example, the character may include a letter. For example, the character may include a symbol, a mark, and/or a sign. For example, the character may include a number. For example, the character may include an icon, such as an emoticon or an emoji graphical object. However, the disclosure is not limited thereto.

For example, the character may be expressed in a binary code such as Unicode, American standard code for information interchange (ASCII), or American national standard institute (ANSI). For example, the character may be included in a text object in layout data for the screen. For example, the text object may include TextView, UILabel, or Label. For example, the text object may be different from an image object such as Image View, UIImage (or UIImage View), or CImage. For example, the processormay identify the text object from the layout data and identify the character included in the text object.

For example, the processormay change a brightness level of the character, for eye comfort. For example, the processormay change the brightness level from a first brightness level to a second brightness level higher than the first brightness level. For example, a contrast ratio of the character displayed on the display panelbased on the second brightness level may be lower than a contrast ratio of the character displayed on the display panelbased on the first brightness level. A contrast ratio of the character may indicate a difference between the highest brightness level and the lowest brightness level within an area including the character and a background portion at which the character is positioned. As a non-limiting example, the contrast ratio of the character displayed on the display panelbased on the second brightness level may be about 10:1, like a contrast ratio of a character in a newspaper or an electronic book.

For example, the processormay obtain first data for a screen including the character having the first brightness level while the function for an eye comfort is disabled. For example, the processormay obtain second data for a screen including the character having the second brightness level based on an event indicating to enable the function. The event will be illustrated in greater detail below with reference to. The first data and the second data may be illustrated in greater detail with reference to.

is a diagram illustrating examples of the first data and the second data according to various embodiments.

Referring to, the processormay obtain first datawhile the function is disabled. For example, in the first dataobtained based on the layout data, characters within an areamay be included in a text object, unlike other characters outside the area. For example, each of the characters within the areamay have the first brightness level. For example, the processormay display, on display panel, the screen, by providing the display driver circuitrywith the first datafor the screen including the characters each having the first brightness level.

For example, the processormay identify the event indicating to enable the function for an eye comfort, while the screen is displayed based on the first data.

For example, the processormay obtain second data, which is partially different from the first data, based on the event. For example, the processormay display, on the display panel, the screen, by providing the display driver circuitrywith the second datafor the screen including the characters each having the second brightness level.

For example, in response to the event, the processormay identify, from the layout data, the characters within the areaincluded in the text object. For example, the processormay change a brightness level of each of the characters within the areafrom the first brightness level to the second brightness level. For example, since the characters within the areaare included in the text object, unlike the other characters outside the area, a brightness level of each of the characters within the areamay be changed, unlike a brightness level of each of the other characters outside area, which is maintained independently of the event.

For example, a grayscale of each of the characters (e.g., the characters within the areain the second data) each having the second brightness level may be higher than a grayscale of each of the characters (e.g., the characters within the areain the first data) each having the first brightness level. As a non-limiting example, when the first brightness level is 1 (cd/m) (wherein ‘cd’ is candela and ‘m’ is meter), the second brightness level may be 100 (cd/m).

The change from the first brightness level to the second brightness level may be illustrated in greater detail below with reference to.

includes graphs illustrating a changed brightness level of a character in a screen according to various embodiments.

Referring to, a graphrepresents a relationship between a grayscale and a brightness level of each of the characters within an areain first data (e.g., the first dataof), and a graphrepresents a relationship between a grayscale and a brightness level of each of the characters within the areain second data (e.g., the second dataof). For example, when a grayscale of each of the characters within the areais 0, a difference between the first brightness level of each of the characters within the areain the first dataand the second brightness level of each of the characters within the areain the second datamay be a. For example, the second brightness level of each of the characters within the areain the second datamay correspond to a grayscale b in the first data, as indicated by the graph. However, the disclosure is not limited thereto.

Referring back to, the second brightness level may be different from a brightness level of each of the characters within the areain third data, which is obtained by changing a color temperature of the first datafor an eye comfort. It should be noted that a layeris only illustrated into visually indicate that the third datais obtained by changing the color temperature of the first data. For example, the screen displayed on the display panelbased on the second datamay provide an enhanced eye comfort service compared to the screen displayed on the display panelbased on the third data.

According to an embodiment, the processormay identify the first brightness level of each of the characters within the areaincluded in the text object, in response to the event. For example, the processormay obtain the second databased on the first brightness level being lower than a reference brightness level, and may bypass or refrain from obtaining the second databased on the first brightness level being higher than or equal to the reference brightness level. For example, since the first brightness level being higher than or equal to the reference brightness level may indicate that a contrast ratio of each of the characters within the areacorresponds to a contrast ratio of characters in the newspaper, the processormay refrain from obtaining the second dataeven in a case that the event is identified when the first brightness level is higher than or equal to the reference brightness level. As a non-limiting example, in response to the event, the processormay obtain the second dataor may refrain from obtaining the second data, using a code represented as in Table 1 (e.g., 32 gray) below.

For example, the processormay obtain the second databy changing the luminance (Y), orange chrominance (Co), and green chrominance (Cg) of each of the characters within the areawhen the first brightness level, Input_Y, is lower than the reference brightness level, Output_Font_Y_Gain+16, as shown in Table 1, and obtain the first dataotherwise. However, the disclosure is not limited thereto.

Referring back to, the display driver circuitrymay process data provided from the processorand display the screen on the display panelbased on the processed data, for an eye comfort. For example, the display driver circuitrymay process the first data or the second data from the processor, based on the event, for an eye comfort. For example, the processing of the display driver circuitrymay be executed based on a control signal (or control command) provided to the display driver circuitryfrom the processor. For example, the display driver circuitrymay obtain, by processing the first data (or the second data) to change a brightness level of an entire area of the screen from a third brightness level to a fourth brightness level based on the event (or the control signal), third data (or fourth data) converted from the first data (or the second data), and display the screen on the display panelbased on the third data (the fourth data). For example, the third data (or the fourth data) may be obtained to provide a contrast ratio lower than a contrast ratio of a screen displayed based on the first data (or the second data). The third data and the fourth data may be illustrated in greater detail below with reference to.

is a diagram illustrating an example method of processing data for a function for an eye comfort according to various embodiments.

Referring to, the display driver circuitrymay obtain third databy processing the first dataobtained from the processorto change the brightness level of the entire area of the screen from the third brightness level to the fourth brightness level based on the event. Changing the brightness level of the entire area of the screen may indicate changing not only the brightness level of the character but also the brightness level of each visual object within the screen. However, the disclosure is not limited thereto. For example, the display driver circuitrymay obtain fourth databy processing the second dataobtained from the processorto change the brightness level of the entire area of the screen from the third brightness level to the fourth brightness level based on the event. The change from the third brightness level to the fourth brightness level may be illustrated in greater detail below with reference to.

includes graphs illustrating a change in a brightness level of an entire area of a screen executed according to data processing according to various embodiments.

Referring to, a graphrepresents a relationship between a grayscale and a brightness level of the screen displayed based on the first data(or the second data), and a graphrepresents a relationship between a grayscale and a brightness level of the screen displayed based on the third data(or the fourth data). For example, a difference between a brightness level of a position where the grayscale is 0 within the screen displayed based on the first data(or the second data) and a brightness level of a position where the grayscale is 0 within the screen displayed based on the third data(or the fourth data) may be c. For example, the brightness level of a position where the grayscale is 0 within the screen displayed based on the third data(or the fourth data) may correspond to a brightness level of a position where the grayscale is d within the screen displayed based on the first data(or the second data). However, the disclosure is not limited thereto.

Referring back to, the display driver circuitrymay obtain the third data(or the fourth data) by processing the first data(or the second data) to further change a color gamut of the screen, for an eye comfort. For example, the display driver circuitrymay obtain the third data(or the fourth data) by processing the first data(or the second data) to further change color temperature of the screen, for an eye comfort. For example, a layermay indicate that a changein brightness level of the entire area of the screen, a changein color gamut, and/or a changein color temperature are executed. It should be noted that the layeris only illustrated into visually indicate that the third data(or the fourth data) is obtained by changing the brightness level, color gamut, and color temperature of the first data(or the second data). For example, the screen displayed on the display panelbased on the third data(or the fourth data) may provide an enhanced eye comfort service compared to the screen displayed on the display panelbased on the first data(or the second data).

illustrates an example in which the display driver circuitryobtains the third dataor the fourth databased on the event, but obtaining the third dataor the fourth datamay also be executed by the processorbased on the event. In this case, the processormay display the screen on the display panel, by providing the third dataor the fourth datato the display driver circuitry.

Referring back to, the display driver circuitrymay adjust a voltage provided to the display panel, for an eye comfort. A contrast ratio of a screen displayed on the display panelbased on the adjustment of the voltage may be lower than a contrast ratio of the screen displayed on the display panelwithout the adjustment of the voltage. For example, the display panelmay include light-emitting diodes (e.g., organic light emitting diode (OLED)) and driving transistors for driving each of the light-emitting diodes. For example, each of the driving transistors may be used to provide current to each of the light-emitting diodes. For example, the display driver circuitrymay display, on the display panel, the screen, based on providing, a gate electrode of at least a portion of the driving transistors, another voltage distinct from a voltage corresponding to a brightness level of data (e.g., the first data, the second data, the third data, or the fourth data) for the screen. For example, since a conversion from the first data to the third data (or a conversion from the second data to the fourth data) is executed by digital processing, when a difference between a brightness level (e.g., the third brightness level) of the first data (or the second data) and a brightness level (e.g., the fourth brightness level) of the third data (or the fourth data) is relatively large, distortion (e.g., aliasing) may appear in the screen displayed based on the third data (or the fourth data). For example, in order to reduce the distortion, the display driver circuitrymay provide, to the gate electrode of the at least a portion of the driving transistors, the other voltage. The distortion may be illustrated in greater detail below with reference to.

is a diagram illustrating an example of distortion appearing in a screen according to various embodiments.

Referring to, third datamay be converted from first data, by processing the first datato change the brightness level of the entire area of the screen from the third brightness level to the fourth brightness level. A layerillustrated infor the third datamay indicate that a changein brightness level of an entire area of a screen, a changein color gamut, and/or a changein color temperature are executed when converting from the first datato the third data. It should be noted that the layerofis illustrated into visually indicate that the third datais obtained by changing the brightness level, the color gamut, and the color temperature of the first data. A density of lines in the layer, which is higher than a density of lines in the layerof, may indicate that a difference between the first dataand the third datais greater than a difference between the first dataand third data (e.g., the third dataof).

For example, since the conversion from the first datato the third datais a digital processing, the amount of distortion(or decrease in quality of a screen) of the screen caused by the conversion from the first datato the third datawhen a difference value between the third brightness level and the fourth brightness level is higher than a reference value may be greater than the amount of distortion when the difference value is lower than or equal to the reference value. For example, independently of whether the difference value is higher than the reference value, a distortionwhen the fourth brightness level (and/or the third brightness level) is lower than a threshold brightness level may be more visible than a distortionwhen the fourth brightness level (and/or the third brightness level) is higher than or equal to the threshold brightness level.

illustrates the distortioncaused by the conversion from the first datato the third data, but a distortion, such as the distortion, may also be caused by the conversion from the second data to the fourth data.

Referring back to, in order to reduce the distortion (e.g., the distortion) or reduce the visibility of the distortion, the display driver circuitrymay obtain fifth data (or sixth data) converted from the first data (or the second data), by processing the first data (or the second data) to change the third brightness level to a fifth brightness level between the third brightness level and the fourth brightness level. For example, the display driver circuitrymay display, on the display panel, the screen, based on providing, to a gate electrode of the at least a portion of the driving transistors, a second voltage different from a first voltage corresponding to the fifth brightness level. For example, the second voltage may correspond to the fourth brightness level. For example, obtaining the fifth data (or the sixth data) and/or providing the second voltage may be executed based on a control signal (or control command) provided from the processor. However, the disclosure is not limited thereto.

For example, unlike converting the first data (or the second data) to the third data (or the fourth data), since providing the second voltage is analog processing, providing the second voltage may reduce the distortion. Providing the second voltage may be illustrated in greater detail below with reference to.

is a circuit diagram illustrating an example method of providing a second voltage, different from a first voltage, for a function for an eye comfort according to various embodiments.

Referring to, the display driver circuitrymay identify changing a brightness level of an entire area of a screen to be displayed on the display panelfrom the third brightness level to the fourth brightness level, for an eye comfort. For example, the identification may be executed based on a control signal (or control command) provided to the display driver circuitryfrom the processor. For example, the display driver circuitrymay identify a fifth brightness level lower than the fourth brightness level (or a fifth brightness level between the third brightness level and the fourth brightness level) based on identifying that the difference value between the third brightness level and the fourth brightness level is higher than the reference value, or that the fourth brightness level (and/or the third brightness level) is lower than the threshold brightness level, and may obtain, by processing the first data (or the second data) to change the third brightness level to the fifth brightness level, fifth data (or sixth data) changed from the first data. For example, the display driver circuitrymay display, on the display panel, the screen, based on providing, to a gate electrode of at least a portion of the driving transistors, a second voltage, corresponding to the fourth brightness level, different from the first voltage corresponding to the fifth data (or the sixth data) (or corresponding to the fifth brightness level). For example, the display driver circuitrymay display, on the display panel, the screen, based on emitting a light-emitting diodeconnected to a drain electrode D of a driving transistor(T1) by providing a second voltage 2, corresponding to the fourth brightness level, different from the first voltage 1 corresponding to the fifth brightness level to a gate electrode G of the driving transistorconnected to a capacitorfor storing data. A source electrode S of the driving transistormay be connected to another transistor. A brightness level that changes according to providing the second voltage 2 may be illustrated in greater detail below with reference to.

is a graph illustrating a brightness level of a screen displayed according to a voltage identified for a function for an eye comfort according to various embodiments.

Referring to, a graphrepresents a relationship between a grayscale and a brightness level of a screen displayed based on providing a second voltage V. For example, a brightness level of a position where the grayscale is 0 within the screen may correspond to a value c. For example, the value e may be greater than a value f corresponding to a brightness level of the position of the screen displayed on the display panelbased on data (e.g., the fifth data or the sixth data). For example, the electronic devicemay provide an enhanced eye comfort service in a state of maintaining a quality of the screen, by providing the second voltage V.

Referring back to, in response to the difference value being lower than or equal to the reference value, or the fourth brightness level being higher than or equal to the threshold brightness level, the display driver circuitrymay display, on the display panel, the screen, based on bypassing providing the second voltage to a gate electrode of each of the driving transistors. For example, the display driver circuitrymay convert the first data (or the second data) into the third data (or the fourth data) in response to the difference value being lower than or equal to the reference value, or the fourth brightness level being higher than or equal to the threshold brightness level, and display the screen on the display panelby providing a voltage corresponding to the third data (or the fourth data) to each of the driving transistors.